The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 02, 2014
Filed:
May. 05, 2009
Applicants:
Jani Lehto, Tampere, FI;
Kari Kuukkanen, Tampere, FI;
Timo Honkola, Kangasala, FI;
Inventors:
Assignee:
Valmet Power Oy, Tampere, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21C 11/04 (2006.01); D21C 11/06 (2006.01); D21C 11/12 (2006.01);
U.S. Cl.
CPC ...
D21C 11/04 (2013.01); D21C 11/06 (2013.01); D21C 11/125 (2013.01); D21C 11/12 (2013.01);
Abstract
The invention relates to a method and equipment for treatment of black liquor at a pulp mill in order to recover chemicals and energy contained therein. In the invention, the black liquor is pyrolyzed in a pyrolysis reactor (), the formed gaseous components are forwarded for utilization and the solids are mixed with water, whereby the formed solids are returned to a lime burning kiln () and the sodium-hydroxide-containing liquid is returned to the pulp cooking process.